docs: def dafopr(fname):
      """
      Open a DAF for subsequent read requests.
  
      http://naif.jpl.nasa.gov/pub/naif/toolkit_docs/C/cspice/dafopr_c.html
  
      :param fname: Name of DAF to be opened.
      :type fname: str
      :return: Handle assigned to DAF.
      :rtype: int
      """
      fname = stypes.stringToCharP(fname)
      handle = ctypes.c_int()
      libspice.dafopr_c(fname, ctypes.byref(handle))
      return handle.value